放电等离子烧结制备M42粉末高速钢/45钢双金属复合材料

M42 PM High Speed Steel/45 Steel Bimetal Composite Fabricated by Spark Plasma Sintering

摘要: 利用放电等离子烧结方法一次性实现了M42粉末高速钢及其与45钢双金属复合材料的制备,分析了连接接头的界面形貌,测试了连接接头的结合强度.结果表明:在970 ℃×10 min、压力70 MPa烧结工艺下制备的复合材料连接接头组织致密均匀,复合材料实现了冶金结合,结合强度可达到550 MPa.

Abstract: M42 powder metallurgy high speed steel (PM HSS) and PM HSS/45 steel bimetal composite were one step prepared by spark plasma sintering (SPS) technique.The interface morphology and bonding strength between 45 steel and M42 PM HSS were analyzed.The results show that the composite joint had uniform and dense microstructure,when the SPS was performed at 970 ℃ for 10 min under 70 MPa.The composite was metallurgical bonding and the bonding strength was up to 550 MPa.